World History Please help (;-;)

Egyptian citizens whose mass demonstrations caused a change in
government in 2011 used social media such as Faceboo* as a tool for
organizing. How did Faceboo* most likely have an impact on events in Egypt?

A) It reduced young people’s need to carry cell phones to the demonstrations.
B) It informed people when and where a demonstration would take place.
C) It persuaded the leaders of the government to resign from office.
D) It kept the outside world from knowing about the revolution until after it happened.